Given:
an expression is given as below
1.7m² +6.5n - 4n+ 2.5m² – n
Find:
we have to simplify the given expression.
Step-by-step explanation:
we will simplify the given expression as following
1.7m² + 6.5n - 4n+ 2.5m² – n = (1.7 + 2.5)m² + (6.5 - 4 - 1)n = 4.2m² + 1.5n
Therefore, we get
1.7m² +6.5n - 4n+ 2.5m² – n = 4.2m² + 1.5n
Therefore, correct option is 4.2m² + 1.5n.